CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
ASSETS
Loans	$ 6,520,512	$ 5,686,749
Allowance for loan losses	(74,751)	(71,426)
Net loans	6,445,761	5,615,323
Loans held for sale	1,357	3,877
Investment securities:
Available for sale	6,762,411	6,937,463
Held to maturity (market value of $231,510 and $129,495, respectively)	209,770	114,756
Trading	28,464	55,764
Federal Reserve Bank stock and other	50,482	26,333
Total investment securities	7,051,127	7,134,316
Federal funds sold and securities purchased under agreements to resell	87,018	89,868
Interest-bearing due from banks	2,093,467	720,500
Cash and due from banks	521,001	667,774
Bank premises and equipment, net	249,689	244,600
Accrued income	78,216	69,749
Goodwill	209,758	209,758
Other intangibles	55,585	68,803
Other assets	118,873	102,628
Total assets	16,911,852	14,927,196
Deposits:
Noninterest-bearing demand	5,189,998	4,920,581
Interest-bearing demand and savings	7,001,126	5,450,450
Time deposits under $100,000	491,792	540,269
Time deposits of $100,000 or more	957,850	742,065
Total deposits	13,640,766	11,653,365
Federal funds purchased and repurchase agreements	1,583,218	1,787,270
Short-term debt	107
long-term debt	5,055	5,879
Accrued expenses and taxes	153,450	182,468
Other liabilities	23,191	18,869
Total liabilities	15,405,787	13,647,851
SHAREHOLDERS' EQUITY
Common stock, $1.00 par value; 80,000,000 shares authorized, 55,056,730 shares issued and 45,221,237 and 40,340,878 shares outstanding, respectively	55,057	55,057
Capital surplus	882,407	732,069
Retained earnings	884,630	787,015
Accumulated other comprehensive income	(32,640)	85,588
Treasury stock, 9,835,493 and 14,715,852 shares, at cost, respectively	(283,389)	(380,384)
Total shareholders' equity	1,506,065	1,279,345
Total liabilities and shareholders' equity	$ 16,911,852	$ 14,927,196